Carbureter.



No. 663,663. Patented Dac. Il, |900.

H. w.- ROYAL.

cmausersn. @Applimm ala Apr. 1o, 16cm (No Model) messes.

m 2S, El;

-llllllll V N WMM 6 www Hmmm m.

NiTn Sfrnirns nrnnr HENRY W. ROYAL, OF BALTIMORE, MARYLAND, ASSIGNORIOF ONE-HALF TO WILLIAM B. BROWN, OF SAME PLACE.

CARBURETER.

SPECIFICATION forming part of Letters Patent No. 663,683, dated December 11, 1900.

Application iled April 10, 1900.

T0. all whom t may concern:

Be it known that I, HENRY W. ROYAL, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented a certain new and useful Oarbureter, of which the following is a specification, reference being had therein to the accompanying drawing. 1

This invention relates to carbureters; and the objectin view is to provide a carburetor ofv simplified and improved construction which is entirely automatic in action, thus doing away with the' constant attention of an operator. In machines of the class referred to in order to obtain the best results and produce a gas which shall be of the necessary richness and at the same time economical it is essential that the hydrocarbon in the carbureter be maintained at a certain uniform level. In order to accomplish this, a regulating-valve is associated with the oil-supply pipe, which leads from the supply-tank into the carbureter, said valve being so arranged that it opens automatically when the level of the hydrocarbon is lowered and admits sufficient oil to again bring the oil to the necessary level, whereupon the valve, which is actuated by a float, closes and prevents further admission of oil. In order to primarily x the level of the oil in the carbureter, the iioat of the valve is adjustable and capable of being fixed when the proper adjustment has been ascertained. To obtain the best results, air under com pression must be forced into the hydrocarbon-tank and the carbureter, so as to effect the necessary pressure behind the carbureted air, and to insure the proper operation of the regulating-valve in the carbureter the pressure in the carbureter must be less than the pressure 4o in the hydrocarbon-tank, this being effected by means of a reducing-valve, which is interposed between said tanks. These and other objects of the invention will appear more fullyin the course of the ensuing description.

The invention consists in a carburetor embodying certain novel features and details of construction and arrangement of parts, as hereinafter fully described, illustrated in the drawing, and incorporated in the claims. 5o The accompanying drawing represents a vertical sectional view, partly in elevation, of

Serial No. 12,352. (No model.)

a carbureter constructed in accordance with the present invention.

Referring to the drawing, l designates a gas-engine provided with a compression-cylinder 2, in which the air is compressed and forced through a discharge-pipe 3 into an airtank 4, the pipe 3 passing through the top of the air-tank and terminating about midway of the height of said tank and being also proA 6o vided at an intermediate point with a cut-od valve 5.

6 designates the hydrocarbon-tank, and 7 the carbureter. Leading from the top of the tank llis an air-supply pipe S, having abranch 9, which passes through the top ofthe hydrocarbon-tank 6, and another branch 10, which leads downward through the top 11 of the carbureter to a point near the bottom of the i carbureter, where the air is discharged and 7o caused to pass upward through the hydrocarbon contained in the carbureter. The branch 9 is equipped with a cut-off valve 12, and a reducing-valve 13 is associated with the pipe l0 between the tank 6 and carbu- 75 reter 7, so that a less pressure of air within the carbureter may by obtained than the pressure in the oil-supply tank 6.

The tank 6 may be filled with the hydrocarbon; but in order to secure the best re- 8o sults the hydrocarbon within the carblureter must be maintained at a certain level. If this level is materially increased. or diminished, the gas will be either too rich or too poor, on the one hand producing an unsatisfactory light and on the other hand adding too much to the cost of production. In order `to maintain the oil at a predetermined level,

I employ a regulating-valve 14, which is associated with the discharge end ofan oil- 9o supply pipe l5, the receiving end of which is arranged in the tank 6, adjacent to the bottom thereof. The pipe 15 extends outward through the top of the tank 6 and thence downward outside of the tank and laterally into the carbureterbelow the normaloil-level,thus forming a connection by means of which the oil is conveyed, to the carburetor. The airpressure within the tank thus insures the proper feeding of the oil through the supplyroo pipe l5 into the carbureter. Associated with the valve 14 is a lever-arm 16, the end of which is provided with an opening for. the passage of the stem 17 of a fioatlS. The stem 17 may be adjusted up or down through the opening in the lever 16 and is fixed at the desired adjustment by means of a binding-screw 19, as clearly shown. After the proper level of the oil has been ascertained the oat is by the means above described adjusted with relation to the lever-arm 16, and thereafter it will operate automatically to maintain the oil at the proper level. As the oil is consumed the float 18 begins to descend;

but this immediately eects an openingA of v the valve 14, and an additional supply of oil feeds into the carbureter to take the place of that which has been consumed and to restore the'oil toits normal level.; Itwill thus be seen that the device operatesautomatically and requires no attention. The carbureted air is taken off from the carburetor 7 by means of a supply-pipe 20, having one branch 21, which leads to the engine for driving the same, and another branch" 22, which suppliesl the burners.

The carbureter isprovided with a-removable cover 23, which is removably bolted to a iiange at the top ofthe carbureter, as shown, and provided with openings for thev admission-of, the pipes 10 and 20. A bafiie-plate 24 islarranged near the top of the carbureter,

`but within the same and beneath the pipe 20,

for preventing particles of oil which are carried upward from entering the service-pipe 2O.` This baffle-plate' 24 is supported upon the air-supply pipe '10 and is of less'diameter than the internal diameter of the carbureter,

so as to leave an annular space varound its edge, providing sufficient room for the carbureted air to pass upward into the supplyipe. The oil which accumulates on the lower surface of the bafiie-plat'e 211 will ultimately find its way by gravity to the main body of the oil in the carburetor.

The carbureter is provided with a gage 25, and the hydrocarbon-tank 6 is provided with a similar gage 26, whereby the level of the oil in said tanks may be observed at any time. A safety-valve 27 is'arranged in the dischargepipe 3, so as to discharge any excessy of pressure. 28 designates a pipe which is` interposed between the discharge-'pipe 3 and the engine-supply pipe 2l in order to regulate the working of the engine in accordance with the amount of pressure in the tank 4.

From the foregoing description it will be seen that after filling the hydrocarbon-tank 6 and starting the machine no fu rtherv attention is required until the supply of oil in the vtank 6 has been nearly consumed, and then tlie only thing necessary to be' done is to again fill said supply-tank. The oil is fed automatically from the supply-tank 6 into the carbureter, the pressure in the supply-tank being in excess-of that in the carbureter, and the level of the hydrocarbon in the carbureter 7 is automatically maintained at a uniform level to produce the best quality of gas in themost economical manner. It will also be seen thatA the hydrocarbon will be prevented from entering and clogging the service-pipe. ,Owing to the fact that the regulating-valve 14 is at all times submerged in the oil, aground-valve and socket will beem# ployed to withstand the action of the oil.

I do not desire' to be limited to the exact details of construction hereinabove set forth, butreserve to myself the right to change, modify, or vary the construction within the scope of this invention.

Having` thus described the invention, what is claimed as new is- 1. In a carbureter, the combination with an air-compressor, of a hydrocarbon-supply tank, a earbureter inI communication therewith, a'A reducing valve interposed between said tank* and carbureter, to enable alower pressure to be obtained in the carburetor than in the oil-supply tank, and means within the carburetor' for maintaining the hydrocarbon at a' predetermined level, substantially as described. t

2.y In a carbureter,l the combination with an air-compressor, of av hydrocarbon-tank, a carbureter, an oil-supply pip'eleading from the tankv to the carbu reter, an automatic regulating-valve within the carburetor associated with" the oil-supply pip'e, and an' air-supply pipe communicating with' the hydrocarbontank and carburetor and having a reducingvalve interposed between the same, to enable a lower pressure rtolbe obtained in the car.- bureterl than in the oil-supply tank, substantially-as' described.

3. In a carbureter, the combination with an air-compressor, of aliydrocarbo'n-tank, a carbu reter, an oil-supply pipe leading from the hydrocarbon-tankto the carbureter, an automatic regulating-valve within the carbureter associated with the discharg'eend of said pipe below the oil-level, anair-'supp'ly pipe leading from the compressor andhaving branches leading into the hydrocarbon-tank and carbureter, and a press-uresreducing valve associated with the air-supplypipe between the hydrocarbon-tank and carbureter, to enable a lower pressure to be obtained in the carbureterthan in. the oil-supply tank, substantially as described.

4f. In a carbureter, the combination with an air-compressor, of an air-tank'communieating therewith,- a hydrocarbon-tank, a car'- bu'rete'r, an air-supply pipe leading from the IOO air-tank to the carbureter and having a r 1o termediate of the earbureter and oil-tank,

whereby a lower pressure may be obtained in the earbureter than in the oil-tank, substantially as described.

In testimony whereof I ax my signature in presence of two witnesses.

HENRY W. ROYAL.

Witnesses:

E. E. LODGE, ALLEN C. CLARK. 

